Difference between revisions of "SceCompatMailbox"
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(Created page with "== SceCompatMailbox == {| class='wikitable' |- ! Address ! Size |- | 0xE5070000 | 0x1000 |} == Registers == {| class='wikitable' |- ! Offset ! Size ! Comments |- | 0x00 + 4...") |
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| (3 intermediate revisions by the same user not shown) | |||
| Line 20: | Line 20: | ||
| 0x00 + 4 * ID | | 0x00 + 4 * ID | ||
| 4 | | 4 | ||
| − | | | + | | Raise MIPS Compat interrupt <code>ID</code>. Write all ones. Interrupts will become visible at <code>0xBC300030</code> on [[PSP_Emulator#Interrupt_manager|MIPS side]] |
|- | |- | ||
| 0x80 + 4 * ID | | 0x80 + 4 * ID | ||
| 4 | | 4 | ||
| − | | | + | | Enable raising MIPS Compat interrupt <code>ID</code>. Write all ones |
|} | |} | ||
| + | |||
| + | == Interrupt raising sequence == | ||
| + | To raise "Compat" interrupt <code>ID</code> to the MIPS processor, the following sequence is used: | ||
| + | <source lang="c"> | ||
| + | // Write data to shared address | ||
| + | shared->foo = bar; | ||
| + | // Trigger interrupt | ||
| + | dsb(0xf); | ||
| + | *(u32 *)(0xE5070000 + ID * 4 + 0x80) = 0xffffffff; | ||
| + | dsb(0xf); | ||
| + | *(u32 *)(0xE5070000 + ID * 4) = 0xffffffff; | ||
| + | dsb(0xf); | ||
| + | </source> | ||
Revision as of 18:06, 14 April 2020
SceCompatMailbox
| Address | Size |
|---|---|
| 0xE5070000 | 0x1000 |
Registers
| Offset | Size | Comments |
|---|---|---|
| 0x00 + 4 * ID | 4 | Raise MIPS Compat interrupt ID. Write all ones. Interrupts will become visible at 0xBC300030 on MIPS side
|
| 0x80 + 4 * ID | 4 | Enable raising MIPS Compat interrupt ID. Write all ones
|
Interrupt raising sequence
To raise "Compat" interrupt ID to the MIPS processor, the following sequence is used:
// Write data to shared address
shared->foo = bar;
// Trigger interrupt
dsb(0xf);
*(u32 *)(0xE5070000 + ID * 4 + 0x80) = 0xffffffff;
dsb(0xf);
*(u32 *)(0xE5070000 + ID * 4) = 0xffffffff;
dsb(0xf);